package com.sanery.ui.interceptor;

import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import javax.servlet.http.HttpSession;

import org.springframework.web.servlet.HandlerInterceptor;
import org.springframework.web.servlet.ModelAndView;

public class LoginInterceptor implements HandlerInterceptor {

	// 请求结束释放资源
	@Override
	public void afterCompletion(HttpServletRequest arg0, HttpServletResponse arg1, Object arg2, Exception arg3)
			throws Exception {

	}

	// 出去的时候
	@Override
	public void postHandle(HttpServletRequest arg0, HttpServletResponse arg1, Object arg2, ModelAndView arg3)
			throws Exception {

	}

	// 进来的时候
	@Override
	public boolean preHandle(HttpServletRequest request, HttpServletResponse response, Object target) throws Exception {
		HttpSession session = request.getSession();
		if (session.getAttribute("user") != null)
			return true; // 放行
		response.sendRedirect(request.getContextPath() + "/login");
		return false; // 不放行
	}
}